Gateway E-842R, Руководство пользователя

Страница: 91 / 164

Advanced array functions www.gateway.com
85
3
Select a verify method from the list, then click VERIFY PARITY .
The following table provides a description of each option:
During the verification, the drive members icons in the front enclosure view of
that array display an animated icon, indicating a verification is in progress. Also,
adjacent to the array name in the
Main window, a progress bar indicates the
percent complete. When you place the mouse pointer over the progress bar a
pop-up displays the value of the percent complete.
You can stop the verification process by clicking the Stop link located to
the right of the progress bar.
Option Description
Check Parity This option reads all the data and parity, calculates the XOR of the
data, and compares it to the parity. If there is an error, it is
displayed in the event log.
Rewrite Parity This option reads all the data, calculates the XOR of the data, and
writes this out as the new parity. This is the fastest method to
complete because it does not have the overhead of a
comparison.
Check and Rewrite Parity This option reads all the data and parity, calculates the XOR of the
data, and compares it to the parity. Then, if there is a discrepancy,
it writes this out as the new parity and creates a log entry. This
is the slowest method to complete because it has the overhead
of a comparison as well as a rewrite.